There are certainly many many instances where visual programming doesn't do the job. One instance where I found it incredibly useful, though, was with Node-RED

There are certainly many many instances where visual programming doesn't do the job. One instance where I found it incredibly useful, though, was with Node-RED. I used it to build a hobby-grade process automation solution, including a number of software PID control loops, that ran current limiters, valves and pumps, several load cells and half a dozen temperature sensors. All of this was orchestrated from Node-RED running on a Raspberry Pi communicating with the Tasmota esp8266 sensor/controller nodes over MQTT and I built it from scratch, learning along the way, over the course of 2-3 days. Something about the visual pipelines and processing nodes really helped with handling concurrency, priority and maintaining tidy boundaries between systems. It was the first time I really had fun programming something in quite some time.